Negative index photonic crystal lenses based on carbon nanotube arrays

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Negative index photonic crystal lenses based on carbon nanotube arrays. / Butt, Haider; Dai, Qing; Wilkinson, Timothy D.; Amaratunga, Gehan A J; Butt, Haider.

In: Photonics and Nanostructures - Fundamentals and Applications, Vol. 10, No. 4, 01.10.2012, p. 499-505.

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Butt, Haider ; Dai, Qing ; Wilkinson, Timothy D. ; Amaratunga, Gehan A J ; Butt, Haider. / Negative index photonic crystal lenses based on carbon nanotube arrays. In: Photonics and Nanostructures - Fundamentals and Applications. 2012 ; Vol. 10, No. 4. pp. 499-505.

Bibtex

@article{344e2ac1790f4b8fb52653d262176b5d,
title = "Negative index photonic crystal lenses based on carbon nanotube arrays",
abstract = "We report a novel utilization of periodic arrays of carbon nanotubes in the realization of diffractive photonic crystal lenses. Carbon nanotube arrays with nanoscale dimensions (lattice constant 400 nm and tube radius 50 nm) displayed a negative refractive index in the optical regime where the wavelength is of the order of array spacing. A detailed computational analysis of band gaps and optical transmission through the nanotubes based planar, convex and concave shaped lenses was performed. Due to the negative-index these lenses behaved in an opposite fashion compared to their conventional counter parts. A plano-concave lens was established and numerically tested, displaying ultra-small focal length of 1.5 μm (∼2.3 λ) and a near diffraction-limited spot size of 400 nm (∼0.61 λ).",
keywords = "Multiwalled carbon nanotube arrays, Negative index, Negative refraction, Photonic crystals, Photonic lenses",
author = "Haider Butt and Qing Dai and Wilkinson, {Timothy D.} and Amaratunga, {Gehan A J} and Haider Butt",
year = "2012",
month = oct,
day = "1",
doi = "10.1016/j.photonics.2012.04.003",
language = "English",
volume = "10",
pages = "499--505",
journal = "Photonics and Nanostructures - Fundamentals and Applications",
issn = "1569-4410",
publisher = "Elsevier",
number = "4",

}

RIS

TY - JOUR

T1 - Negative index photonic crystal lenses based on carbon nanotube arrays

AU - Butt, Haider

AU - Dai, Qing

AU - Wilkinson, Timothy D.

AU - Amaratunga, Gehan A J

AU - Butt, Haider

PY - 2012/10/1

Y1 - 2012/10/1

N2 - We report a novel utilization of periodic arrays of carbon nanotubes in the realization of diffractive photonic crystal lenses. Carbon nanotube arrays with nanoscale dimensions (lattice constant 400 nm and tube radius 50 nm) displayed a negative refractive index in the optical regime where the wavelength is of the order of array spacing. A detailed computational analysis of band gaps and optical transmission through the nanotubes based planar, convex and concave shaped lenses was performed. Due to the negative-index these lenses behaved in an opposite fashion compared to their conventional counter parts. A plano-concave lens was established and numerically tested, displaying ultra-small focal length of 1.5 μm (∼2.3 λ) and a near diffraction-limited spot size of 400 nm (∼0.61 λ).

AB - We report a novel utilization of periodic arrays of carbon nanotubes in the realization of diffractive photonic crystal lenses. Carbon nanotube arrays with nanoscale dimensions (lattice constant 400 nm and tube radius 50 nm) displayed a negative refractive index in the optical regime where the wavelength is of the order of array spacing. A detailed computational analysis of band gaps and optical transmission through the nanotubes based planar, convex and concave shaped lenses was performed. Due to the negative-index these lenses behaved in an opposite fashion compared to their conventional counter parts. A plano-concave lens was established and numerically tested, displaying ultra-small focal length of 1.5 μm (∼2.3 λ) and a near diffraction-limited spot size of 400 nm (∼0.61 λ).

KW - Multiwalled carbon nanotube arrays

KW - Negative index

KW - Negative refraction

KW - Photonic crystals

KW - Photonic lenses

UR - http://www.scopus.com/inward/record.url?scp=84866354766&partnerID=8YFLogxK

U2 - 10.1016/j.photonics.2012.04.003

DO - 10.1016/j.photonics.2012.04.003

M3 - Article

AN - SCOPUS:84866354766

VL - 10

SP - 499

EP - 505

JO - Photonics and Nanostructures - Fundamentals and Applications

JF - Photonics and Nanostructures - Fundamentals and Applications

SN - 1569-4410

IS - 4

ER -